Every time I try to connect to a MUD, I can't connect at all. It doesn't even seem to start trying to connect. I know I entered everything correctly, because I have connected to this particular MUD before (but I can't now).
When I try to connect, I get the normal stuff that pops up from starting MUSHclient (ending with the "connected on [date and time]" message). Then nothing. I've tried waiting (up to half an hour), and still nothing.
What could be the problem?

Once you see "Connected on" find the packet debug window (behind the main world window) and copy and paste all of that here. Don't have auto-login set (second configuration window, where you have your name/password) so that does not appear in this log. We don't want other people to find your password.